XML 116 R104.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Debt - Additional Information (Detail) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 USD ($) Aircraft | Dec. 31, 2016 USD ($)
Disclosure of detailed information about borrowings [line items] |  |
Debt including current maturities | $ 1,174,581 | $ 1,184,132
Support from Export-Import Bank for net purchase price of aircraft | 80.00% |
Aircraft financing maturity period | 15 years |
Loan accreting percentage | 100.00% |
Number of aircraft finance with SOAR structure | Aircraft | 4 |
Finance with SOAR structure | $ 28,300 | 24,800
Non-cash investing and finacing transactions | 89,000 |
Export-import bank of united states [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Outstanding indebtedness | 372,000 | 446,500
Borrowing on which fixed applicable interest rate is exercised | 231,900 | 286,100
Borrowing due through 2018 [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Debt including current maturities | 127,797 |
Borrowing due through 2017 [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Debt including current maturities |  | 83,500
Finance lease [member] | Fixed interest rate [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Debt including current maturities | 394,200 | 416,300
Finance lease [member] | Floating interest rate [member] |  |
Disclosure of detailed information about borrowings [line items] |  |
Debt including current maturities | $ 128,400 | $ 45,400

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